/*
 * Copyright (c) Davide Raccagni (2006, 2009). All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package f06.osgi.framework;

import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;

import org.osgi.framework.BundleContext;
import org.osgi.service.url.URLStreamHandlerService;

class URLStreamHandlerFactoryImpl implements URLStreamHandlerFactory {

	private URLStreamHandlerServiceTracker tracker;

	URLStreamHandlerFactoryImpl(BundleContext context) {
		this.tracker = new URLStreamHandlerServiceTracker(context);
	}
	
	public URLStreamHandler createURLStreamHandler(String protocol) {
		this.tracker.open();
		
		URLStreamHandlerService service = this.tracker.getURLStreamHandlerService(protocol);

		if (service != null) {
			return new URLStreamHandlerProxy(service);
		}

		return null;
	}
}
